3. x2 + 12x - 8
3x² - 10x - 2
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Answer:
3.x2+12x-8= -90
Step-by-step explanation:
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Answer:
2. )
STEP 1:
Equation at the end of step 1
(3x2 - 10x) - 2
STEP2:Trying to factor by splitting the middle term
2.1 Factoring
3x2-10x-2
The first term is, 3x2 its coefficient is 3 .
The middle term is, -10x its coefficient is -10 .
The last term, "the constant", is -2
Step-1 : Multiply the coefficient of the first term by the constant 3 • -2 = -6
Step-2 : Find two factors of -6 whose sum equals the coefficient of the middle term, which is -10 .
-6 + 1 = -5 -3 + 2 = -1 -2 + 3 = 1 -1 + 6 = 5
Observation : No two such factors can be found !!
Conclusion : Trinomial can not be factored
Final result :
3x2 - 10x - 2
Step-by-step explanation:
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